Window regulator



Oct. 29,1946. J. H. ROETHEL WINDOW REGULATOR 3 Sheets-Sheet 2 Filed Jan; 29, 1943 /INVENT0R W 9min ATTORNEYS.

Oct. 29, 1946. J. H.,ROETHEL WINDOW REGULATOfi s Sheets-Sheet s Filed Jan. 29, 1945 IINVENTOR J/fi Foal/ 1262:

ATIORNEY-s.

Patented Oct. 29, 1946 T NT orric WINDOW REGULATOR John H. Roethel, Detroit, Mich, .assignor. to.v

,Roethel Engineering Corporation, I Mich.,'a corporation of Michigan Detroit,

Application January 29, 1943, Serial No. 473,915

1.7 Claims. 1 1 .This invention relates to window regulators for raising and lowering. glass or transparent panels or the like of vehicles; particularly automobile bodies, an object'of the invention being toprovide an improved window regulator which is-compact,.positive and eflicient in operation, relatively simple in construction and economical to manufacture, capable of being easily assembled in the body, and adaptedtoprovide notonly a desirable handle'location. but also to maintain the window panel substantially level during its travel between raised andlowered. positions. A further object of the invention is to provide a new window regulator of the two arm type whichv will support the window panel at spaced points,.in which the two. arms are positively controlled in improvedmanner and mounted compactly upona single support or mounting plate whereby installation is facilitated and the window panel held substantially level. against any lator such as shown in U. s. Patent No, 2,103,223,

the so-called double arm compound gear window regulator .such. as shownin U. S. Reissue Patent No. 19,579, and the cross arm window regulator such as shown in U. S. Patent No. 2,168,243.

These regulators have many advantages and desirable features. However, the parallel arm regulatonwhile inherently providing a desirable remotehandle location, has thedisadvan-tage. of two arms swinging equal distances in the same direction thereby tending to shift the glass. laterally. The compound gear regulator, while avoiding this disadvantage by reason of having two-diverging arms which swing equally in opposite directions, fails inherently to provide a. desirable remote handle location without the interposition of gearing. Also, in this regulator the points of connection of the arms to the glass have undesirably too wide a spreadin the halfway position. The cross arm regulator has the disadvantage of' requiring two separate supports for the arms, one arm being pivoted to amounting plate and the other slidingly connected ata distance therefrom to the inner door or body panel. This renders installation more difficult and more expensive as compared with the two previous mentioned regulators which require a single mounting plate for both arms.

An important object of the present invention is to provide a window regulator of the two arm ,2 type which. will eliminate all of the foregoing disadvantages mentioned inrespect to window regulators of the parallel .armtype, double arm compoundgear type and cross. arm typewhile at the sametime retaining substantially all important advantages thereof.

A further object of theinvention is to provide an; improved window regulator having. two lift armsadapted to. extend inv diverging relation when the'window panel is inraised position, one arm. being shorter than the. other and pivoted to .the longer.armintermedia-tethe ends of the latter, the shorter a'rmhaving. anelbow extension and connected by a link to the mounting plate, the linkbeing shifted by the movement of the inner endof the longer/arm in such manner as to impart a pivotal motion to the shorter arm of asufficient-ly compensatory-natureas to cause the. points of connectionof. the two arms with the window panel to travel :up. and down in substantially a common horizontal plane during operation.

Another important object of this invention is to provide a window. regulator having a .main swinging. arm. .extend-ingirom. a suitable fixed supporter mounting plate and adapted to be connected at its outer end to the lower edge of awindowpanel for raising and lowering the same, the regulator also-comprising a second but shorter balance arm pivoted to the main arm and adapted to be connected at its outer end to the window panel, the balance arm. being positively controlled from themountingplate so as to swing oppositely to and past the main arm during operation. and at such compensated speed as to cause its pointof. connection with the window panel to travel. the same. vertical distance or to have the samerange of travel as the point of connection of the main arm with the panel although traversing a shorter path. I

Still afurther object of. this invention" is to provide animproved window regulator including a. pair. of diverging swinging armsadapted to be connected at their..-o.uter ends to the lower edge of. a window panel for. raising and'lowering the same, one. of the arms being. shorter than the other .and pivoted thereto. intermediate the ends of. the. latter, the: regulator including driving me sfolswinging thelong-er arm and apositive connection. between the shorter arm. and the regulator 'mounting plate. or support. for swinging. the shorter arm. oppositely to. and past thelonger arm during. operation. of the regu .10.. end to the window panel, the said lifting arm being positively controlled from the mounting plate or support so as to swing oppositely to and past the main arm during operation thereby to raise and lower the window panel, the improved construction being such that the lifting arm may be employed alone to provide a single arm reg'ulator or the main arm may be extended for connection to the window panel to provide with the other arm a two arm regulator.

Other objects of this invention will appear in the following description and appended claims, reference being had to the accompanying drawings forming a part of this specification wherein like reference characters designate corresponding parts in the several views.

. Fig. 1 is a fragmentary inner side elevation of an automobile door, such asa front door having installed therein a window'regulator embodying the present invention.

Fig. 2 is an enlarged side elevation illustrating the window regulator in fully raised position and also in an intermediate substantially halfway position. j v

Fig. 3 is a horizontal section taken substantially through lines 33 of Fig. 2 looking in the direc tion of the arrows.

Fig. 4 is a view similar to Fig. 3 illustrating the connection at the outer end of the shorter arm in uncoupled condition. I V

Fig. 5 is a plan view of the constructionshown in Fig. 3. k Fig. 6 is a side elevation illustrating the window regulator in its lowered position.

Fig. 7 is an enlarged section taken substantially through lines 1-'! of Fig. 1 looking in the direction of the arrows.

Fig. 8 is an enlarged section taken substantially through lines 88 of- Fig. 2 looking in the direction of the arrows.v I

Fig. 9 is a fragmentary view of certain' operating parts of the, window regulator;

Fig. 10 is a sideelevation illustrating another embodiment. P Before explaining in detail the present; inven tion it is to be understood that the invention is not limited in its application to the details .of COD: struction and arrangement of parts illustrated in the accompanying drawings, since the inven tion is capable of other embodiments and of being practiced or carried out in various ways. Also it is to be understood that the, phraseology'or terminology employed herein is for the purpose of description and not of limitation. Referring to thedrawings, wherein I have illustrated, by way of example, certain embodiments of the present invention constructed and adapted for the purpose of raising and lowering awindow panel of an automobile body, there is shown at D a front door of an automobile body comprising a door frame H] of any suitable constructionformed with a main window opening. In the present in stance this window openingis closed by means of a vertically slidable glass or other transparent panel H and a wing type panel I2 pivoted in con- 4 ventional manner about an up and down axis intermediate its front and rear edges to swing laterally. It will be understood that the present regulator may be utilized for the purpose of raising and lowering any of the windows of an automobile body and in addition may be used generally in connection with various window structures for the purpose'of raising and lowering the window panels thereof.

The sliding panel H is adapted to be guided in any suitable manner within the window well,

1 suchflas by means of front and rear vertically extending guides or glass run channels l3. In

the present instance, the glass panels II and I2 are separated by means of a vertical partition bar Ha which may either be fixed within the window opening to provide a guide for the forward edge of the panel H, or may be secured to this panel and adapted to travel therewith into the window well. Secured to the bottom edge of the panel II is a channel or glass retainer member 15 to which the, window regulator is adapted to be connected. In the present instance, by way of example, the panel H is guided into and out of the window well by means of roller guide devices [4 carried by the channel I5 and adapted to travel along the guides l3. v

In the present instance, the window regulator comprises a suitable support or mountingplate Hi which may be stamped or pressed'from a sheet metal blank and having suitable screw bosses I! by which the mounting plate may be secured within the window well to the inner door or body panel. A driving gear (8 is rotatively mounted upon the plate 16, this gear being in the form of a sector having gear teeth in meshing relation with a driving pinion mounted upon a handle shaft l9, this shaft being operated by a crank handle at the inner side of the door or body and embodying in its length a suitable friction clutch of any conventional type. In the present instance the sector gear I8 is formed integrally with a 1 projecting lifting arm 22, herein called the main or driving arm, and this arm and gear member is secured to a pivot stud 20 journalled within the mounting plate 16. The driving arm 22 is adapted to be swung upwards and downwardly about the axis of the pivot 20 upon turning the gear l8 from the pinion on the handle shaft 19. The main or driving arm 22 is connected at its outer end through a stud 23 with a hanger memher or bracket 24 which, as hereinafter described, is adapted to be slidingly connected to the retainer channel 15 at the lower edge of the window panel. Acting upon th driving arm 22, as well as the gear I8, is a spirally wound counterbalancin spring 25, the inner end of which is fastened in a slot or kerf in the end of the stud 20 and the outer end of which is'connected to a lug 26 struck out from the mounting plate.

"I 'he regulator also comprises a second swinging arm 27, which may conveniently be termed a balance arm, and which is in the form of an elbow 'or angle arm having a longer arm portion 211: and a shorter angularly related arm portion 21b. The arm 21 is shorter than the main arm 22 and extends in crossed relation thereto. 'The arm 21 at the juncture of the arm portions 21a and 27b thereof is pivoted in overlapping relation at 28 to the main or driving arm 22, so that the'ang'le portion 21b of the shorter arm forms a depending angular extension of the arm portion 27a. The outer end of the arm 2'! is journalled upon a stud 23' and thereby connected to a second hangermemberor bracket 24 slidingly connected to the retainer member: l5 'as hereinafter described. In the presentinstance the hanger members. or brackets 24, as well as the stud connections 23 and 23' of. the regulator arms, are identical...

It will be seen that theicrankportinn 2'lbof the arm; 2:! is in the. form ofa substantially; right angular depending. extension: which extendsbelow'the driving arm 22. In the present instance the pivotal. connection 28 between'the balance arm..21and the main arm 22 is at a point'ofiset from the; longitudinal center oithe driving arm. In. this'embodimentthe arm- 22 is provided with alateral extension 22aand the pivot 28 is located inthis. extension, a e-illustrated in the drawings, at aipredetermined distance from the point X lo cated at the intersection of two perpendicularly disposed lines extending centrally through the arms 22 and 21. Pivoted at 35 to the lower end oftheextension 2'") .is a control link or bar 32. This. link or bar extends generally in the direction of the arm 22 and at its inner end it is pivotedi at 33'totheouter end of thelever 34. The opposite or inner end of this lever 'ispivoted by means of a stud 35to a lateral extension 36 of the arm and gear member is, 22. The lever 34, intermediate the pivots 33 and 35, is fulcrumed upon the mounting plate'lS through the medium of a shoulder rivet 31, see particularly Fig. 8. The rivet is secured rigidly to the lever 34 and is journalled within'a flanged vertical slot 38 in the.

mounting plate, see Figs. 2 and 8. Thus it' will hanger member 24 the stud 23' or 23; c'arriedby the arm, is inserted through the aperture in the base of the embossed. portion .39 with the lugs passing through the grooves or slots 4| inthe flanged portion 49 of the embossment. ,A quick turn of the stud through an angular path of ninety-degrees will-cause'the head of the stud: to be drawn tightly against the end of. the: arm, tensioning the washer 45.. The parts will be se-'- curely interlocked when the lugs 42' anchor themselves'within the notches M, beingyieldinglyheld therein bythe spring 45. The parts may be quickly detached by turning" the studin the. op posite direction with suffi'cient efiort to forcethe lugs out of the notches 44. i

Due to the pivotal connection 23, 23' between i the hanger members'z l and the lifting armsv 22 and 21, the arms are adapted to. rotate relative to the hanger members during the raising and lowering operation of the window panel. In the present instance the connection between the hanger members 24 and the window panel I l is in the form of antifriction rollers which are adapted 1 to reduce the effort required to operate the window panel, especially in connection with the of example in the drawings. Referring to Fig. 5,

be seen that the lever 34 positively connects the 7 driving arm and gear member !8, 22 to thevcontrol link 32, power being applied to the lever at the point above the fulcrum .37 and being i transmitted to the control link at the point 33 at the opposite side of the fulcrum. Hence, it will be seenthat upon rotation of the gear IS the lever 34' will be swung about'its fulcrum 31 thereby arms 22"and ZI'and thelower edgeof the window panel. An advantageous construction by which this is accomplished is illustrated'in Figs. 2 to 5 inclusive and is identical for each arm. Each stud 23 or 23" has a slotted head to receive a screwdriver and also has: a cylindrical shank extendingsmoothly througha hole in the end of the arm. Ea'ch hanger" bracket z'd comp'rises a generally'triangularly shaped plate embossed at 35",

the emb'ossment being punched centrally to provide an aperture flanged at' lt) around its edge. The shank of the stud 23-15 swagedat its end to provide two diametrically'opposed lugs 42 and the flange is embossed and formed with opposed slots" or grooves 4| so that the shank of the stud maybe passed through the aperture in the bottom of the embossment 39, thev lugs lzpassing freely through the slots .or grooves 41. The inarginal edge of the flange portion. is? provided with a cam :contour 43 and at high. points of the cam. the edge of the flange is provided with opposed notches 44 disposed at right angles to the grooves ll Thus it will be seen that upon rotat ing the stud 23 or 23" ninety degrees from the position shown in Fig. 4 the lugs 52 will travel up the earns 43- until the lugs drop' into the notches A4 thereby interlocking the partstogether. In-

terposed between the end of the arm 21a, or 22', andthe embossed portion 39 of the hanger member: '24. isa spring anti-rattle :washer' 45. In assembling'the end of either of thearmswithathe each hanger member 24 is generally triangular in shape and at its wider upper end carries a set of three rollers 29 and 29a operable within a.

guideway formed by a channel members!) secured, as by spot welding,'to the bottom of'the glass retainer channel [5. One pair of rollers 29, j'ournalled on the hanger niemberM, track along a grooved guideway in the bottom of the channel guide 30, whereas the intermediate roll} er 29a is journalled at a somewhat higher level and the roller 29a is adapted to track alongthe upper flanged surface of the channel guide 30. If desired the rollers 29 and-29a may be journalled on the hanger member! through the medium of self-oiling bearings thereby increasing the life of the device and reducing frictionduring operation.

From the foregoing it will be seen that I have provided an improved, simplified and compact window regulator of the cross arm type requiring but a single mounting plate andjin which the shorter or balance arm is controlled for'swingihg movementin a direction opposite to the main arm through themedium of lever mechanism or the like driven from the main armat a point on the mounting plate adjaceht the pivotal axis of the main arm. It will be further noted that con' tr'ol mechanism for swinging the shorter or balance arm comprises a parallel motion mechanism and. the construction; is such'that the arm 21a, is adapted to pass bythe'main arm 22- and also the control link 32 during movement of the win-' dow panel between its upper and lower limits of travel. In the illustrated c'onstruction the distance between the axis of swinging 270' of themain arm and'the point X is the same as the length of the control link- 32 between the pivots 3 i. and33. Moreover, the distance between the point Xand the pivot 28 is the same as the distance between the pivots 2B and 35; Moreover, the length of the control link 32 between the pivots SI and 33 is the same'as the distance between the pivots 2% and 35, and the length of the lever 36. between the pivots 33 and '35 is the same as the" angular extension 2112 between the pivots Hand 3!; From this construction itwill be. seen, by comparing the positions .of the various 7 parts'in Figsl 2ua'nd fifthat a parallel motion mechanismds provided in" which level-.34 and arm extension 21b move inparallelism at all tithes and control link 32 and main arm 22 also move in parallelism at all Ltimes. Thus a very advantageous and easily operated regulator is provided. EItWill further be noted that the'lev'er 34 whose motion controls the motion of the link 32 and the balancelarm 21; is operated from a point. 35 offset laterally from. the pivotal axis of'the main arm 22. This'provides a simple operating device in which the proper swinging motion may be imparted .to the arm2'l by theme-- tion .of the main armor drive'gearl'lil adjacent the axis of rotation or turning thereof. The control s1ot 38 permits movement/of the fulcrum 31 vertically during operation of the regulator so as to compensate for the arcuate motion of the. pivot '35 during turning motion of the gear 18 as well as the innerend of the ma'in arm 22. Y =1, Intheoperation of the window regulator it will be understoodrthat rotation of the gear Win one direction from the pinion on the handle shaft 1 9 will swing the main arm 22 downwardly, carrying with it the shorter or balance arm 2! due to the pivotal connection ,28 between these arms." In lowering the window panel 1 I the arms 22 and -2l will-swing from the position shown in full lines inFigs. -1 and 2 to the halfway position shown indotted lines in these figures and to the fully lowered position of the window panel shown in full lines in Figi 6.; In lowering the window panelit willbe seen that the pivot 33 moves from a point at the left of an imaginary .vertical'line passing through fulcrum 3? to a .pointat theright of this imaginary line, see

Fig. 6. -'Inlike manner, arm extension 211) and pivot-3l move from a predetermined position at the left. of an imaginary vertical line passing through pivot 28 to a similar position at-the right of this imaginary line, compare positions of arm extension 21b in Figs 2 and 6. In raising the window position ot-Figs 6 to the full line posi- ,tion of Fig. 2 it will be understood that thereverse action takes place fromthat above 'described.

The controlled movement of the angular or elbow extension 211) is of considerable importance in the present embodiment of the invention, this being accomplished through-control link32 and lever 34. As a result it is possible utilize a crossarm21- in conjunction with arm -22 to support the window: panel at relatively widely,;spaced points 23- and 23 while at the same time enabling the arm 21 to be swung or rotated about its pivot 28 oppositely to arm' 22 from apoint on the mounting plate ISnear the pivot '25 ,while also positively-controlling the extent' of this pivotal motion of arm 21 so as to maintain the window supporting points 23 and 23, substantially, horizontal. Since the pathof travel of point 23 approximates more nearly a rectilinear path there is no material tendency of the panel H to be shifted laterally to one side or the otherby any frictional drag as in thecase ofcertain prior types of window regulators, and inthe present embodiment any frictional drag in one directionor the other is materially reduced by virtue-nor the roller connections 29, a between the liftingarms and the window panel. It will .furtherbe noted that since the arms 2? and 22 swing in *oppositedirections the points of support-.23 and 23 are; increasingly separated as thBE-zWiIldQW panel-travels down or untoward the halfway position, thus achieving a desirable advantage in respect to the stability of the window panel in-open positions.

Also it will be seen that since arm 22 and control link 32 extend generally in the same direction, they may be mounted upon a' singl'ecom mon mounting plate to one side of the center line of the glass, as shown in Fig. l,'and a remote handle location at 19 may be had. This handle location may be varied, as desired, by variations in the size of the gear 18 and in the lengths of arms 22and 21. Although these arms swing oppositely, yet the control of arm 21 is such as to avoid too Wide a spread of points .23 and 23' as would prevent use of the regulator with a relatively narrow window, such as shown in'Fig. 1, having a full drop or range of travel as indicated. n

In the event an even more remote handle location than that indicated in Fig. 1 is desired the embodiment of the invention illustrated in Fig. 10 may be utilized. The construction of the regulator in this view is the same as that'heretofore described excepting in the following respects. The main arm 46, as in the previous embodiment, is stamped or blanked out in" one piece but in this instance is formed with angularly related portions thereby eliminating the necessity of forming the projecting extension 22a. The operation of the regulator is the-same, however, since the control link 32 moves in parallelism at all times with the longitudinal axis of the main arm 48 comprising an imaginary'line extending through the pivots 2G and 23. 'In this embodiment also the driving gear is not attached to the inner end of the main arm is but more remotely located. Thus the remote handle locationiis provided by utilizing a longer mounting plate ll upon which the driving gear 48 .is pivoted at 48 spaced laterally from the axis of the rotation 20 of the main arm. Attached to the gear 48 is a third or driving arm 5llwhich is connected at its outer end to the outer end portion of the balance arm 21 by means of a stud 5| secured to the arm 21 and adapted to travel within a slot 52 in the arm 50. Rotation of the gear 48 from the pinion on the handle shaft l9 will swing the driving arm 50 thereby swinging the balance arm 2'! which motion will 50 be imparted to the main arm 46 and the parallel motion members 32 and 34. The movement of the lifting armsin this embodiment will be identical with that in the first described embodiment, the mode of operation being-somewhat different in that the driving efiort from the gear is applied to the balance arm 27 instead of to the main arm 25 as in the previous embodiment.

In the embodiment of Fig. 10 the distance between pivot 28 and the pivot 35 of lever 34 to .50 the inner end of the main arm is the same as -7 parallelism as applied to the movement'of the various members is understood to refer to imag inary straight lines passing through pivotal connections at opposite ends of the members. Thus, the link 32 moves essentially in' parallelism to arm fi even though the latter isaofbent'form 9 for manufacturing reasons. Hence, the parallel motion of the variou'sielements in Fig. 10 corresponds to that .of the previously described .embodiment.

1. A window regulator for raising and lower--' ing a window panel, comprising a swinging driving arm; a loalancearm pivoted'in-termediateits ends to the driving arm at a point intermediate the ends of the latter, said arms when-raised extending in diverging relation and swingablei'n opposite directions past each other during operation and having means for connection at cor-' responding ends to the lower edge of the window panel, means for swinging the driving arm-said balance arm having an angular extension, a-sliiftable link connected to saidangular extension at a point spaced from the driving arm, and means operatively connecting said link and second named means and cooperatingwith said extension to maintain said link and driving arm in vertically spaced substantially parallel relation inall operative positions of the regulator.

2. In a' window regulator, a fixed support, a swinging main arm pivo-tally connected at its inner end to the support and adapted to be connected at its outer end to thelower edge of a window panel, a balance arm havinga' pivotal connection to an intermediate portionof the main :arm, said balance arm adapted to boomnected at its outer end to the lower edge of the panel at a point spaced from the-connection of the main arm with the panel, the inner end of the balance arm extending beyond its pivotal connection to provide an extension, a link pivotally connected to said extension, and means operatively connecting the link to the inner end of the main arm and cooperating with said extension to maintain said link and main arm in vertically spaced substantially parallel relation in all operative positions of the window regulator, the outer end of the balance arm being adapted to pass by the main arm and link during operanon.

3. In a window regulator, a main swinging arm pivoted adjacent its inner end to a support, a second swinging arm pivoted on the main arm'at a distance from the axis of swinging thereof and having means for connection at its outer end to a Window panel, and parallel motion link and lever mechanism for controlling'the swinging motion of said arms oppositely to each other with the second arm passing by the main arm during operation, said link and lever mechanism connecting the inner end portions of the arms and lying at the side of the main arm opposite to the window panel inall operative positions of the regulator.

4. In a window regulator, main swinging arm pivoted adjacent its inner end to a support, a secondswinging arm pivoted on the main arm at a distance from the axis of swinging thereof and having means for connection at its outer end to a window panel, and parallelmotion mechanism for controlling the swinging motion of said arms oppositely to each other with the second arm passing by the ,main arm during operatiomsaid mechanism comprising an angular elbow extension of the second arm, a lever -fulcrumed on the support at a point spaced from the-pivot of the main arm and operatively connected to the inner end of the main arm, and a link connecting said lever and angular extension, said lever and extension being of substantially equal lengths and said link and main arm movable in vertically spaced substantially. parallel relation throughout operation of i the .:regulator.

. 5 Ina windowregulator, amain swinging arm pivoted adjacent its inner end .toa support to swingaboutanaxisand havingmeans at itsouter end tori-connection to 'a'window panel, a second swinging arm pivoted to the main arm outwardly of said .axis' and having means for connection at 6. In a window regulatona mainswinging arm pivotedxadjacent zits *inneruend'vto a support, a second swinging Jarmpivoted to the main arm and havingmeans for, connectionzat' its. outer end to a windowpanel, said second ;arm having an extension beyond its pivotal connection with the main arm atxtheside, of the latter opposite to its connection with the -.window panel, a swinging lever'fulcrumed on the support, means for drivingly connecting thelever :to an inner end portion of themain arm, link means connecting the lever to said extension for swinging the second arm in response to swinging of the main arm, said lever cooperating with said extension to position the connectionbetween the-lever and link means at'all-times'during' operation at theiside of the main arm opposite to the window panel.

' 7-. In a window regulator, aimain swinging arm pivoted adjacent its inner end to a support, a secondswinging armpivoted to the main arm and having "means for connection at its outer end to a'window panel; said second armhaving an extension beyond its pivotal connection with the main arm at the s'ide'of the latter opposite to its connection with the windowpanel, a swinging lever fulcrumed onjthe ;s'upport', means for drivingly connecting the lever to-an inner end portion of t'hemain arm,'link means connecting the lever to said extension for swinging the second arm in response to swinging of the main arm, said lever cooperating'with said extension to position said link means and the connection between the lever and-link means atall times at the side of the pivotal connection of the main arm to the support opposite to, "the I window panel. 8. In a windowregulator, a main swinging arm pivoted adjacent its inner end to a support," a secondswinging arm pivoted to the main arm and having :means for connection atits outer end to a window panel, said second arm'having an elbow extension beyond. its pivotal connection with the main armjat theide of the latter opposite -to its connection with the window panel, a swinging lever f ulcrumed on the support, means for drivingly connecting the lever to an'inner end portion of the main arm, link. means connecting the levertosaid extension for swinging the secn ..a i resp nse swin n of th main am, d e and e tens on po tionin ...said li k means at all times below the axisof swinging of the main arm and substantially parallel to the latter; V i

9. In a windowregulatona main swingingarm pivotedadjacent its ii -ner end to a support, a second swinging arm pivoted to the main arm and having means for eonne'ction at 'its outer end to a window paneL-said second 'arm having an extensiori beyond 'its pivotal connectionwith the rnain arm-at the side of the latter opposite to its-conad ces nection with the window panel, a swinging lever fulcrumed on the support, means for 'drivingly v connecting thelever. to an inner end portion of thezmain arm, linkmeans connecting the lever to the end portionof said extension for swinging thesecond arm in response to swinging of the main .arm said lever and extension cooperating to position/said link means so that the included angle between said lever and link means is less marry-180?- throughout operation of the regulator from fullyraised to fully lowered positions of the window panel.

'10; In a window regulator, a swinging arm fulcrumed adjacent its inner end on a support to swingabout an'axis and having means for connectionzatits outer end to a window panel, a second: swinging armrhaving means for connection to the window panel, said second arm crossingthe main arm and pivoted thereto at a point removedto one side of a line passing through said axis; and; connection and at. the side of said line opposite to the window panel, said second arm havingan extension beyond its pivot lying at the side ofthemain arm opposite to its connection to the window panel,- and mechanism connecting said extension and inner end portion of the main arm forcontrolling the swinging motion of said arms opposite to each other and lying at the side of the main arm opposite to the window panel throughout operation of the regulator from fully raised to fully lowered positions of the panel.

11. In a window regulator, a swinging arm fulcrumed adjacent its inner end on a support to swing about an axis and having means for connection at its outer end to a window panel, a second swinging arm having means for connection at its outer end to the window panel, said second arm crossing the main arm. and pivoted thereto at a point offset to one side of a line passing through said axis and connection, said second arm having an elbow extension beyond said pivot extending regularly with respect to the portion of the second arm at the other side of the pivot, and parallel motion mechanism connecting said extension and inner end portion of the main arm for controlling the swinging motion of said arms opposite to each other and lying at the side of the main arm opposite to the window panel throughout operation of the regulator from fully raised to fully lowered positions of the panel.

12. In a window regulator, a main swinging arm, a second swinging arm crossing said main arm at an intermediate portion of the latter and pivoted thereto adjacent the locality of said crossing, said second arm having means adjacent its outer end for connection to a window panel and said arms extending in diverging relation when the panel is at opposite limits of its range of travel, said second arm having a crank extension beyond saidp ivot extendingv angularly with respect to the portion of the second arm at the other side of the pivot, a push and pull control link pivoted to said extension at a point spaced from the pivotal connection between the arms. a swinging lever operatively connected at a point spaced from the axis of swinging of said main arm to a part fixed to the inner end of said main arm and pivotally connected to said link for shifting the same and imparting rotational motion to the second arm in adirection oppositeto the motion;of the-main-arm, saidleverand extension forming, with thelink and main arm a parallel motion mechanism and saidlink lying in verticall spaced relation *to the main-arm .atthe side thr'df opposite .to the window panel in all operative positions of the window regulator. V.

13. In a window regulator,- a main arm adapted to be connected at its outer end to a window panel, a second arm crossing said main arm at an intermediate portion of the latter and pivoted thereto adjacent the locality of said crossing, said second arm being adapted'to be connected at its outer end to said panel and having an elbow extension beyond said pivot extending angularly with respect to the adjacent portion of thearm, a control link pivoted to said extension at a point spaced from the pivotal connection between the arms, and means connecting the opposite end-pfthe link and the inner end oi the main arm for imparting rotational motion to the second arm oppositely to the motion of .the main arm during operation of the regulator, said link being positioned by said means and extension out of parallel overlapping relation to the main arm in all positions ofthe latter.

14. In a window regulator, a main swinging arm having means for connection adjacent 'its outer end to a window panel, a second swingin arm crossing said main arm at an intermediate portion of the latter and pivoted thereto adjacent the locality of said crossing, said second arm having means adjacent its outer end for connection to said panel and said arms extending in diverging relation when the panel is at opposite limits of its range of travel, said second arm having a crank extension beyond said pivot extending angularly with respect to the portion'oi the second arm at the other side of the pivot, a push and pull control link pivoted to said extension at a point spaced from the pivotal connection between the arms, a swinging lever operatively connected at a point spaced from the axis of swinging of said main arm to a part fixed to the inner end of said main arm and pivotally connected to said link for shifting the same and imparting rotational motion to the second arm in a direction opposite to .the motion of the main arm.

15. In a window regulator, a support, a main swinging arm pivoted to the support adjacent its inner end, a second swinging arm crossing the main arm and pivoted thereto adjacent the locality of crossing and adapted to be connected at its outer end to a window panel, the inner end of the second arm comprising a crank extensionprojecting beyond the pivotal connection between the arms, a lever having a fulcrum on the support intermediate its ends spaced from the axis of swinging of the main arm, a push and pull link pivotally-connecting one end of the lever and crank extension at points spaced respectively from the said fulcrum and the pivotal connection between the arms, and an operative connection between the opposite end of the lever and the inner end of the main arm for causing the main arm to impartswinging motion to the lever to shift the link and thereby swing the second arm opposite to the main arm.

16. In a window regulator, a support, a main swinging arm pivoted to the support adjacent its inner end, a second swinging arm crossing the main arm and pivoted thereto adjacent the locality of crossing and adapted tobe connected at its outer end to a window panel, the inner end of the second arm comprising a crank extension projecting beyond the pivotal connection between the arms, a lever fulcrumed on the support intermediate its ends at a point spaced from the axis of swinging of the main arm, a link connection between one end of the lever and said crank extension, and an operative connection between the inner end of the main arm and the opposite end of the lever at a location spaced from said axis of swinging of the main arm whereby swinging motion of the latter will swing the lever about its fulcrum and impart swinging motion to the second arm oppositely to the main arm.

17. In a. window regulator, a, main swinging arm pivoted to swing about an axis adjacent its inner end, a second arm adjacent its inner end overlapping the main arm and pivotally connected thereto at the locality of overlapping, the outer end of the second arm adapted to be con- 

